/// <summary>
/// Requests the token and secret for the user that logged in
/// </summary>
public UserToken RequestUserToken()
{
if (!AppAuthorized)
{
throw (new PhotobucketApiException("App Not Authorized"));
}
string userTokenUrl = OAuth.GenerateURL(_apiUrl, _userTokenUrl, _userTokenMethod, _consumerToken);
ResponseMessage userTokenResponseMessage = GetResponseMessageFromUrl(userTokenUrl, _userTokenMethod);
_userToken = OAuth.GetUserTokenFromResponse(userTokenResponseMessage.ResponseString);
_userLoggedOn = true;
_appAuthorized = false;
_consumerToken = null;
_currentUser = new User(_userToken.Username);
return(_userToken);
}